Kev piav qhia: Erbium-doped fiber Amplifier EDFA Optical Amplifier

Kev piav qhia: Erbium-doped fiber AmplifierEDFA Optical Amplifier

Erbium-doped optical fiber amplifier (EDFA, uas yog, lub teeb liab kho qhov muag amplifier nrog Er3 + doped hauv lub fiber core los ntawm lub teeb liab) yog thawj lub teeb liab kho qhov muag amplifier tsim los ntawm University of Southampton hauv xyoo 1985, thiab nws yog ib qho ntawm cov khoom tsim zoo tshaj plaws hauv kev sib txuas lus fiber ntau. Erbium-doped fiber yog ib hom fiber nrog me me ntawm cov khoom tsis tshua muaj erbium (Er) ions hauv quartz fiber, uas yog lub hauv paus ntawmErbium-doped fiber amplifierTxij li thaum xyoo 1980s lig, muaj kev tshawb fawb loj heev txog erbium-doped fiber amplifiers. WDM thev naus laus zis tau ua rau muaj peev xwm ntawm kev sib txuas lus fiber ntau dua. Nws yog lub amplifier optical siv dav tshaj plaws hauv kev sib txuas lus fiber ntau.

Daim Ntawv Thov: Lub tshuab ua kom lub zog fiber ntau yog lub tshuab ua kom lub zog fiber ntau ncaj qha ua kom lub teeb liab pom tseeb hauv lub tshuab sib txuas lus fiber ntau. Hauv lub tshuab sib txuas lus siv lub tshuab ua kom lub zog fiber ntau ncaj qha ua kom lub teeb liab pom tseeb tsis hloov lub teeb liab pom tseeb mus ua lub teeb liab hluav taws xob. Lub tshuab ua kom lub zog fiber ntau Erbium-doped (EDFA Optical Amplifier, uas yog, lub tshuab ua kom lub zog fiber ntau nrog erbium ion Er3 + hauv lub fiber tseem ceeb los ntawm lub teeb liab) yog thawj lub tshuab ua kom lub zog fiber ntau tsim los ntawm University of Southampton hauv tebchaws United Kingdom thiab Tohoku University Nyiv Pooj, nws yog ib qho ntawm cov khoom tsim tshiab tshaj plaws hauv kev sib txuas lus fiber ntau. Lub tshuab ua kom lub zog fiber ntau Erbium yog ib hom fiber ntau nrog me me ntawm cov khoom tsis tshua muaj erbium (Er) ions hauv quartz fiber, uas yog lub hauv paus ntawm lub tshuab ua kom lub zog fiber ntau Erbium-doped. Txij li thaum xyoo 1980s, kev tshawb fawb loj tau ua tiav hauv kev tshawb fawb ntawm lub tshuab ua kom lub zog fiber ntau erbium-doped. WDM thev naus laus zis tau ua rau lub peev xwm ntawm kev sib txuas lus fiber ntau ntau ntxiv. Nws yog lub tshuab ua kom lub zog fiber ntau siv dav tshaj plaws hauv kev sib txuas lus fiber ntau.

Cov txheej txheem yooj yim

Lub npe lo lus: Erbium-doped fiber amplifier

Cov lus sib xws:Lub Tshuab Nqus Teeb Pom Kev Zoo

Quartz fiber doped nrog cov khoom tsis tshua muaj av (xws li Nd, Er, Pr, Tm, thiab lwm yam) tuaj yeem tsim ib lub tshuab laser ntau theem, thiab ncaj qha ua kom lub teeb liab nkag siab nyob rau hauv qhov kev ua ntawm lub teeb twj tso kua mis. Tom qab muab cov lus teb tsim nyog, lub laser fiber tau tsim. Lub wavelength ua haujlwm ntawm ND-doped fiber amplifier yog 1060nm thiab 1330nm, tab sis nws txoj kev loj hlob thiab daim ntawv thov raug txwv vim yog qhov sib txawv ntawm qhov chaw nres nkoj zoo tshaj plaws ntawm kev sib txuas lus fiber thiab qee qhov laj thawj. Lub wavelength ua haujlwm ntawm EDFA thiab PDFA yog nyob rau hauv qhov poob qis tshaj plaws (1550nm) thiab xoom dispersion wavelength (1300nm) qhov rais ntawm kev sib txuas lus fiber ntau, thiab TDFA ua haujlwm hauv S-band, uas yog qhov tsim nyog heev rau kev siv tshuab sib txuas lus fiber ntau. Tshwj xeeb tshaj yog EDFA, qhov kev loj hlob sai tshaj plaws, tau ua tau zoo.

Raws li kev txhim kho ntawm erbium-doped fiber, ntau lub fiber amplifiers tshiab tseem tshwm sim. Piv txwv li, dual-band fiber amplifier (DBFA) raws li erbium-doped fiber yog lub broadband optical amplifier, thiab broadband tuaj yeem npog yuav luag tag nrho wavelength division multiplexing (WDM) bandwidth. Ib yam khoom zoo sib xws yog ultra-wideband optical amplifier (UWOA), uas muaj bandwidth npog kom nthuav dav txog li 100 wavelength channels hauv ib lub fiber.

Kev siv tau tiag tiag

Daim ntawv thov ntawm Erbium-doped fiber amplifier (EDFA Amplifier) ​​hauv cov kab ke sib txuas lus digital fiber ntau tuaj yeem txuag tau ntau yam optical Repeaters, thiab qhov deb ntawm relay tau nce ntxiv heev, uas yog qhov tseem ceeb heev rau lub cev cable ntev.

Nws cov ntawv thov tseem ceeb suav nrog:

1, siv tau ua lub amplifier nrug deb ntawm lub teeb. Cov khoom siv fiber optic repeaters ib txwm muaj ntau qhov txwv. Piv txwv li, thaum lub teeb liab digital thiab lub teeb liab analog raug hloov mus rau ib leeg, lub repeater yuav tsum tau hloov raws li; Thaum cov khoom siv hloov ntawm qhov ceev qis mus rau qhov ceev siab, lub repeater yuav tsum tau hloov raws li. Tsuas yog xa tib lub wavelength ntawm lub teeb liab, thiab cov qauv yog nyuaj, kim, thiab lwm yam. Erbium-doped fiber amplifiers kov yeej cov kev tsis txaus no, tsis yog lawv tsis tas yuav hloov nrog kev hloov pauv ntawm hom teeb liab, tab sis kuj tsis tas yuav hloov thaum cov khoom siv nthuav dav lossis siv rau optical wavelength division multiplexing.

2, siv tau ua lub tshuab xa tawm optical transmitter post amplifier thiab lub tshuab txais optical receiver preamplifier. Ua lub tshuab xa tawm optical transmitter, lub zog xa ntawm lub laser tuaj yeem nce ntxiv los ntawm 0db mus rau + 10db. Thaum siv ua lub tshuab xa tawm optical receiver preamplifier, nws qhov rhiab heev kuj tuaj yeem txhim kho tau zoo heev. Yog li ntawd, tsuas yog 1-2 lub erbium-doped amplifiers tau teeb tsa ntawm kab, thiab qhov deb ntawm kev xa xov tuaj yeem nce ntxiv los ntawm 100-200km.

Ntxiv rau, erbium-doped fiber amplifier (EDFA Amplifier) los daws qhov teeb meem. Cov txiaj ntsig tshwj xeeb ntawm Erbium-doped fiber amplifiers tau lees paub los ntawm lub ntiaj teb, thiab tau siv ntau dua thiab ntau dua. Txawm li cas los xij, Erbium-doped fiber amplifiers kuj muaj qee qhov kev txwv. Piv txwv li, hauv kev sib txuas lus ntev tsis tuaj yeem nce thiab nqis, qhov chaw nres tsheb ua lag luam sib cuag nyuaj dua, tsis yooj yim nrhiav qhov tsis zoo, lub twj tso kua mis lub neej tsis ntev, nrog rau kev nce qib tas mus li ntawm kev siv tshuab fiber ntau, cov teeb meem no yuav raug daws tau zoo.